Sql 两个表的存货余额

我在SQL Server中有两个表，第一个用于库存，第二个用于库存移动。我需要一个查询来显示每个序列号的剩余原材料，以及是否有移动

表1

+----------+------------+-----+
| CodeRaw  | Serial_Raw | Qty |
+----------+------------+-----+
|        1 |          1 | 100 |
|        1 |          2 | 150 |
|        2 |          1 |  80 |
|        1 |          3 | 100 |
|        1 |          4 | 100 |
+----------+------------+-----+

和表2

+------------+----------+------------+----------+--+
| CodeBatch  | CodeRaw  | Serial_Raw | Qty_Added|  |
+------------+----------+------------+----------+--+
|          1 |        1 |          1 |       80 |  |
|          2 |        1 |          1 |       10 |  |
|          3 |        1 |          2 |      150 |  |
|          4 |        1 |          3 |       80 |  |
+------------+----------+------------+----------+--+

我已经尝试了一些代码，但我只是在有库存移动的情况下得到了结果，没有显示特定原始数据（code_raw）的所有QT

也许我错过了什么

这就是我的疑问

declare @tbl1 table (CodeRaw INT, Serial_Raw INT, Qty INT)
declare @tbl2 table (CodeBatch INT, CodeRaw INT, Serial_Raw INT, QtyAdded INT)

insert into @tbl1 values (1,1,100), (1,2,150), (2,1,80), (1,3,100),(1,4,100)
insert into @tbl2 values (1,1,1,80), (2,1,1,10), (3,1,2,150), (4,1,3,80)

  SELECT t2.Serial_Raw, t1.Qty - t2.QtyAdded AS Total_Remaining  FROM @tbl1 t1
        INNER JOIN (SELECT CodeRaw, Serial_Raw , SUM(QtyAdded) QtyAdded FROM @tbl2
                    GROUP BY CodeRaw, Serial_Raw) AS t2 ON t2.CodeRaw = t1.CodeRaw AND t1.Serial_Raw = t2.Serial_Raw
    WHERE t1.CodeRaw = 1   

我预料

Serial_Raw  Total_Remaining 
----------  --------------- 
1           10  
2            0  
3           20 
4           100

但结果是

Serial_Raw  Total_Remaining 
----------  --------------- 
1           10  
2            0  
3           20    

---

提前感谢

使用左外部联接代替内部联接，也可以使用左表中的ISNULL和serial_Raw

declare @tbl1 table (CodeRaw INT, Serial_Raw INT, Qty INT)
declare @tbl2 table (CodeBatch INT, CodeRaw INT, Serial_Raw INT, QtyAdded INT)

insert into @tbl1 values (1,1,100), (1,2,150), (2,1,80), (1,3,100),(1,4,100)
insert into @tbl2 values (1,1,1,80), (2,1,1,10), (3,1,2,150), (4,1,3,80)

  SELECT t1.Serial_Raw, t1.Qty - ISNULL(t2.QtyAdded,0) AS Total_Remaining  FROM @tbl1 t1
        LEFT OUTER JOIN (SELECT CodeRaw, Serial_Raw , SUM(QtyAdded) QtyAdded FROM @tbl2
                    GROUP BY CodeRaw, Serial_Raw) AS t2 

                    ON t2.CodeRaw = t1.CodeRaw AND t1.Serial_Raw = t2.Serial_Raw
    WHERE t1.CodeRaw = 1  

结果:

Serial_Raw  Total_Remaining
----------- ---------------
1           10
2           0
3           20
4           100

---

我认为你的问题在于你的

内部连接。只返回两个表中的库存结果。也就是说，如果某个项目没有库存变动，则不返回总计数

步骤1:将
内部连接切换到
左侧外部连接
。这将返回库存表中的所有结果（
tbl1
），即使它没有移动（
tbl2
）。另外，如果从
JOIN
返回空值，请从
tbl1
中选择
Serial\u Raw
，而不是
tbl2

步骤2:步骤1将为
JOIN
中添加的
tbl2.QtyAdded
返回
NULL
。为此，您可以使用
ISNULL（tbl2.QtyAdded，0）
在计算中执行空检查。然后，如果没有添加的
QtyAdded
，则
tbl1.Qty
将减去0（保持不变）

结果代码：

declare @tbl1 table (CodeRaw INT, Serial_Raw INT, Qty INT)
declare @tbl2 table (CodeBatch INT, CodeRaw INT, Serial_Raw INT, QtyAdded INT)

insert into @tbl1 values (1,1,100), (1,2,150), (2,1,80), (1,3,100),(1,4,100)
insert into @tbl2 values (1,1,1,80), (2,1,1,10), (3,1,2,150), (4,1,3,80)

  SELECT t1.Serial_Raw, t1.Qty - ISNULL(t2.QtyAdded, 0) AS Total_Remaining  FROM @tbl1 t1
        LEFT OUTER JOIN (SELECT CodeRaw, Serial_Raw , SUM(QtyAdded) QtyAdded FROM @tbl2
                    GROUP BY CodeRaw, Serial_Raw) AS t2 ON t2.CodeRaw = t1.CodeRaw 
                         AND t1.Serial_Raw = t2.Serial_Raw
    WHERE t1.CodeRaw = 1   

Serial_Raw  Total_Remaining
-----------------------------
1           10
2           0
3           20
4           100

结果：

declare @tbl1 table (CodeRaw INT, Serial_Raw INT, Qty INT)
declare @tbl2 table (CodeBatch INT, CodeRaw INT, Serial_Raw INT, QtyAdded INT)

insert into @tbl1 values (1,1,100), (1,2,150), (2,1,80), (1,3,100),(1,4,100)
insert into @tbl2 values (1,1,1,80), (2,1,1,10), (3,1,2,150), (4,1,3,80)

  SELECT t1.Serial_Raw, t1.Qty - ISNULL(t2.QtyAdded, 0) AS Total_Remaining  FROM @tbl1 t1
        LEFT OUTER JOIN (SELECT CodeRaw, Serial_Raw , SUM(QtyAdded) QtyAdded FROM @tbl2
                    GROUP BY CodeRaw, Serial_Raw) AS t2 ON t2.CodeRaw = t1.CodeRaw 
                         AND t1.Serial_Raw = t2.Serial_Raw
    WHERE t1.CodeRaw = 1   

Serial_Raw  Total_Remaining
-----------------------------
1           10
2           0
3           20
4           100

你需要做两个改变

左键连接到第二个表
检查第二个表的列是否为空，然后将减号设置为0